Answer
In "Star Trek: Discovery," Anthony Rapp portrays Lieutenant Paul Stamets, a brilliant mycologist who specializes in the study of fungi. Stamets is known for his expertise in spore drive technology, a groundbreaking method of interstellar travel that utilizes the mycelial network, a vast interconnected web of fungal organisms. His understanding of mycology becomes instrumental in the crew's exploration of the mycelial network and their subsequent encounters with various alien species.